Troubleshooting No 12 Volt Accessory Circuit Present on 7-Way of 2008 Nissan Frontier

Question:

I installed the components for adding the 7 pin connector, wire pigtails, and relay assembly purchased from retailer for my vehicle. I am not getting 12 volts to the 7 pin for charging the trailer battery. I have validated that I am not getting the power to the factory harness. Do the 2 blue and 1 brown relays have something to do with this? I have tried replacing the brown relay, but it has not fixed it. I need to figure out why I am not getting the 12 volts now.

asked by: Christopher C

Expert Reply:

On your 2008 Nissan Frontier, there should be a relay and there could be a fuse for the 12 volt power circuit on the factory installed 7-Way. To find the locations you will want to look in the owners manual. However I checked a copy online and there was no specific information about the fuses/relays and what they do. This information then is most likely on the lid of the power distribution box under the hood and on the inside cover of the in-cab fuse panel.

I believe you will need a large brown relay, included in relay kit # C57000, in the power distribution box under the hood.

expert reply by: Jameson C